TWM641933U - Wrench for disassembling large steering hydraulic cylinder - Google Patents

Abstract

A wrench for disassembling large steering hydraulic cylinder and is suitable for a hydraulic cylinder cover. An outer periphery of the hydraulic cylinder cover is provided with at least one groove. The wrench includes an ring-shaped head, at least one protruding point protruding inward from an inner periphery thereof, the at least one protruding point is set corresponding to the at least one groove of the hydraulic cylinder cover, and a size of the outer periphery of the hydraulic cylinder cover is approximately equal to the size of the inner periphery of the ring-shaped head; and a handle, extending outward from one side of the ring-shaped head. It makes that each protruding point can fully engage each corresponding groove, will not loosen during disassembly, and also avoid operators injury while maintenance, so as to improve the work safety of operators. The handle is designed in an elongated shape, so that operators can apply force to hold it and operate it easily by a single person, achieving the effect of labor saving.

Description

Large steering hydraulic cylinder disassembly wrench

The invention relates to a wrench device, in particular to a labor-saving dismantling wrench for a large steering hydraulic cylinder.

Generally speaking, when the hydraulic cylinder of the forklift machine in the working area leaks oil, it is usually disassembled by using the chain wrench 300 shown in FIG. 1 to unscrew the screw fixing part. However, when a large hydraulic cylinder is encountered, more force is required to disassemble the hydraulic cylinder head (as shown in Figure 3), so the chain wrench 300 may not be able to withstand the applied force of disassembly, and may also cause maintenance personnel to disassemble due to The chain breaks and you lose your center of gravity and fall, or cause collision damage.

At present, there is no special tool that can completely bite the hydraulic cylinder head to avoid the situation of no looseness during disassembly. Because the hydraulic cylinder head of a large hydraulic cylinder needs to be disassembled, the dismantling tools must be labor-saving and reduce the burden on the maintenance personnel; however, the current dismantling tools are not durable, and they often loosen suddenly and cause injuries. Operate with one person. However, the current dismantling tools are made of chains, so they require additional maintenance in a special way, and are not easy to store and place.

In view of the aforementioned problems, the creator has devoted himself to research and development. Therefore, the main purpose of this creation is to provide a large-scale steering hydraulic cylinder dismantling wrench. Four protruding points are set around the ring head to correspond to the four hydraulic cylinder heads. Grooves, so that each protruding point can fully engage each groove, and will not loosen during disassembly, and also avoid injury to maintenance personnel, so as to improve the work safety of maintenance personnel; and the handle is designed in a slender shape to facilitate maintenance Personnel can exert force to hold and operate easily by a single person, which not only achieves labor-saving effect and reduces the burden of maintenance personnel, but also can be maintained in the same way as other hardware tools, without additional maintenance in a special way.

Furthermore, the dismantling wrench of this creation is designed to have a flat outline, which is convenient for maintenance personnel to store.

In order to achieve the above purpose, this creation provides a large-scale steering hydraulic cylinder dismantling wrench, which is suitable for a hydraulic cylinder head. At least one groove is provided on the outer periphery of the hydraulic cylinder head. Shaped head, the inner periphery of which protrudes inwardly with at least one protruding point, the at least one protruding point is set corresponding to the at least one groove of the hydraulic cylinder cover, and the size of the outer periphery of the hydraulic cylinder cover is approximately equal to the the size of the inner periphery of the annular head; and a handle extending outward from one side of the annular head.

In some embodiments, the handle has a thickness between 40mm and 50mm.

In some embodiments, the annular head is tapered to the handle.

In some embodiments, the handle has a force application point, the center point of the force application point to the annular head is a length of a force application arm, the length of the force application arm is equal to a radius of the hydraulic cylinder head or The ratio of a radius of the inner periphery of the annular head is 4.6:1.

In some embodiments, the force arm is 1050mm.

In some embodiments, the number of the at least one groove is four.

In some embodiments, the number of the at least one bump is four.

In some embodiments, the handle has an elongated appearance.

In some embodiments, the dismantling wrench has a flat structure as a whole.

In some embodiments, the outer periphery of the ring-shaped head is substantially in the shape of a water drop.

100: dismantling wrench

1: ring head

11: bump

2: Grip

200: hydraulic cylinder head

210: Groove

300: chain wrench

F: force point

L: force arm

R: Radius

T: torque

Fig. 1 is a schematic diagram of a conventional tool for disassembling a hydraulic cylinder.

Fig. 2 is a schematic plan view of disassembling the wrench for the large steering hydraulic cylinder of this creation.

Figure 3 is a schematic diagram of the hydraulic cylinder head.

Figure 4 is a schematic diagram of the use of the dismantling wrench for the large steering hydraulic cylinder of this creation.

Regarding the technical means used in this creation to achieve the above-mentioned purpose, the following implementation forms are shown below in detail in conjunction with the diagram, so that everyone can understand and agree with it in depth.

Fig. 2 is a schematic plan view of disassembling the wrench for the large steering hydraulic cylinder of this creation. Figure 3 is a schematic diagram of the hydraulic cylinder head. Figure 4 is a schematic diagram of the use of the dismantling wrench for the large steering hydraulic cylinder of this creation.

Please refer to FIG. 3 , at least one groove 210 may be recessed on the outer periphery of the hydraulic cylinder head 200 . In some embodiments, please refer to FIG. 4 , the number of the grooves 210 is four, and the four grooves 210 are arranged at equal angular intervals, but the present invention is not limited thereto.

Please refer to FIG. 2 , the dismantling wrench 100 of the present invention is suitable for a hydraulic cylinder head 200 and includes an annular head 1 and a handle 2 .

Please refer to Fig. 2 to Fig. 4, the inner circumference of the ring head 1 protrudes inwardly with at least one protruding point 11, and each protruding point 11 is set corresponding to each groove 210 of the hydraulic cylinder cover 200, and the hydraulic cylinder cover Perimeter of 200 The size of the circumference is approximately equal to the size of the inner circumference of the ring head 1. In some embodiments, the number of protrusions 11 is four, which is the same as the number of grooves 210 of the hydraulic cylinder head 200 . In this way, each protruding point 11 can completely engage each groove 210, and will not loosen during disassembly, and also avoid injury to maintenance personnel, so as to improve the work safety of maintenance personnel.

The ring-shaped head 1 to the handle 2 are tapered. Please refer to FIG. 2 , in some embodiments, the outer periphery of the annular head 1 is roughly in the shape of a drop.

The handle 2 is extended outward from one side of the ring head 1 . In some embodiments, the annular head 1 to the handle 2 are tapered. In some embodiments, a thickness of the handle 2 is between 40mm and 50mm, so that maintenance personnel can easily apply force and not be easily deformed.

In some embodiments, the handle 2 has an elongated appearance. Please refer to Fig. 2, the handle 2 has a force application point F, the center point of the force application point F to the annular head 1 is a length L of a force application arm, and preferably, the length L of the force application arm is the same as the oil A radius R of the cylinder head (that is, the radius of the inner periphery of the annular head 1 ) is 4.6:1. For example, if the length L of the force arm is 1050mm, the force point F can only exert a force of 20 kg, which is enough to provide a torque of 20 kg-meter (kgf.M) to the hydraulic cylinder head T, and the length L of the force arm and the radius R of the hydraulic cylinder head 200 (that is, the radius of the inner circumference of the ring head 1) are 4.6:1, which is equivalent to giving 4.6 times the power to twist the hydraulic pressure. Cylinder head 200.

In some embodiments, the dismantling wrench 100 of the present invention has a flat structure as a whole, so as to facilitate storage by maintenance personnel.

To sum up, the dismantling wrench 100 of the large-scale steering hydraulic cylinder of this creation uses four protruding points 11 arranged around the inside and outside of the annular head 1 to correspond to the four grooves 210 of the hydraulic cylinder head 200, so that each protruding point 11 can fully engage the grooves 210, and will not loosen during disassembly, and avoid injury to maintenance personnel, so as to improve the work safety of maintenance personnel; and the handle 2 is designed to be elongated, so that maintenance personnel can apply Strong grip and easy operation by one person not only achieves labor-saving effect and reduces the burden on maintenance personnel, but also can be maintained in the same way as other hardware tools without additional maintenance in a special way.

100: dismantling wrench

1: ring head

11: bump

2: Grip

F: force point

L: force arm

R: Radius

T: torque

Claims (10)

A dismantling wrench for a large steering hydraulic cylinder, suitable for a hydraulic cylinder head, the outer periphery of the hydraulic cylinder head is provided with at least one groove, the dismantling wrench includes: an annular head, the inner periphery of which faces inward At least one protruding point is protruded, and the at least one protruding point is arranged corresponding to the at least one groove of the hydraulic cylinder head, and the size of the outer circumference of the hydraulic cylinder head is approximately equal to the size of the inner circumference of the annular head; and a handle extending outward from one side of the ring-shaped head. The large-scale steering hydraulic cylinder dismantling wrench as described in Claim 1, wherein a thickness of the handle is between 40mm and 50mm. The dismantling wrench for a large steering hydraulic cylinder as described in Claim 1, wherein the ring head is tapered to the handle. The large-scale steering hydraulic cylinder disassembly wrench as described in claim 1, wherein the handle has a force application point, and the center point from the force application point to the annular head is a length of a force application arm, and the length of the force application arm is The ratio of the length to a radius of the hydraulic cylinder head or a radius of the inner periphery of the annular head is 4.6:1. The dismantling wrench for a large steering hydraulic cylinder as described in Claim 4, wherein the force arm is 1050mm. The large-scale steering hydraulic cylinder dismantling wrench according to claim 1, wherein the number of the at least one groove is four. The large-scale steering hydraulic cylinder dismantling wrench as described in claim 6, wherein the number of the at least one protruding point is four. The large steering hydraulic cylinder dismantling wrench as described in claim 1, wherein the handle has a slender appearance. The large-scale steering hydraulic cylinder dismantling wrench as described in Claim 8, wherein the dismantling wrench has a flat structure as a whole. The dismantling wrench for a large steering hydraulic cylinder as described in claim 1, wherein the outer periphery of the annular head is roughly in the shape of a water drop.

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